1. This transaction was executed in multiple trades at prices ranging from $44.64 to $44.72. The price above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected.

2. Included in this number are 157,423 unvested restricted stock units granted on March 8, 2014, 5,078 of which shall vest each month through March 8, 2017, and 96,485 unvested restricted stock units granted on March 11, 2013, 5,078 of which shall vest each month through March 11, 2016.

3. Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee.

By: Jess Roper For: Terrance H. Gregg

08/21/2014

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).